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git diff – handling long lines?

<span class="pln">$ GIT_PAGER</span><span class="pun">=</span><span class="str">''</span><span class="pln"> git diff</span>

Eight years later I find a superior answer, from http://superuser.com/questions/777617/line-wrapping-less-in-os-x-specifically-for-use-with-git-diff:

git config core.pager `fold -w 80 | less`